Shaving machine



Jan. 31, 1939.

T. S. CASNER SHAVING MACHINE Filed sept. 17, 195e ATTORNEY,

APatented Jan. 31, 1939 SHAVING MACHINE Thaddeus S. Casner, Plainileld, N. J., assignor to Casner Patents, Inc., a corporation of Delaware Application September 17, 1936, Serial No. 101,197

RElSSU'ED APR 2 9 1941 6 Claims.

'I'his invention relates to improvements in shaving machines and particularly to shaving machines having cutting blades reciprocated across spaced teeth in a guard or comb member and preferably by an electric motor.

Fig. 2 is an end elevation of the machine shown in Fig. 1;

Fig. 3 is a top plan view of the machine shown in Figs. 1 and 2, a. top clamping member being partially broken away;

i 6 One of the objects of this invention is to pro- Fig. 4 is a section on the line 4,--4v of Fig- 3 vide a construction of shaving machine of the looking in the direction of the arrows; type specied in which a movable cutting blade Fig. 5 is a section on the line 5 5 of Fig. 3 will be reciprocated above or outside of the guard looking in the direction of the arrows;

1Q or comb portion and will have its cutting edge Fig. 6 is the bottom plan View of my razor 10 so positioned in relation to a skin-contacting showing the bottom springlocking-plate and edge of said guard or comb portion that the user clamp member partially broken away; will be enabled to shave closely without danger Fig. 7 is an enlarged fragmentary view in top of cutting the skin, and to this end the blade plan of a portion of the comb and cutting blade;

1| is provided with a chisel-shaped cutting edge, Fig. 8 iS a Section on the line 8-8 of Fig. 7 15 i. e. having a single inclined edge-surface extend looking in the direction of the arrows; ing from the top surface to a cutting edge coin- Fig. 9 is a section on the line 9--9 of Fig. 7 ciding with the bottom surface thereof, arid is looking in ;he direction of the arrows; and combined with a comb having a skin-contacting Fig. 10 is -a section on the line |0--I0 of Fig. 7

zo inclined guiding edge extending in the same lookingin the direction of the arrows. plane as the inclined surface of said blade cutting Referring now to the drawing, which illustrates edge whereby the outer portions of said cutting a preferred embodiment of my invention, I indiedge may be reciprocated in abutment with the cates a blade-supporting or holder member havskin to procure a close shave without cutting ing a relatively thick body portion and provided the face at one or each of its longitudinal edges with a 25 Another object of my invention is to provide tapering Comb portion -l having a series of an outside clamp member extending in a longituv comb teeth andinterdental spaces extending at dinal direction parallel to the edge of the blade right angles to said edge. Said supporting memand having a guiding edge inclined in substanber has on its upper face a at blade-mounting 3o tially the same plane as the inclined edges of the Surface ia and is fast on and extends trans- 30 blade and comb, thus further protecting the face versely of a stationary cylindrical stem-member against cutting or injury by the blade. Ib being connected with and extending through Another object of my invention is to provide the bottom surface at the middle of said bladea shaving machine construction embodying a Supporting member to form a T-Shaped strucblade-holder that will be readily cleansable and ture therewith. Said stem-member has an axial 35 may be used to shave hair from the skin either bore lc and a seating`depression Id, for reception with or without a. lather. of a cam-operating shaft 2 and a collar 2n fast Another object of my invention is to provide a on the upper end of said shaft 2, is formed in machine of the character specied which will said stem-member. Said collar is provided with be composed of a minimum number of simple a cam-member]b projecting above said collar- 40 parts and which will be capable of ready and eating depresslfm The Shaft 2 iS provided at quick assembly and dis assemb1y through simple its lower end with a .squared portion 2 adapted movements by unskilled persolm to be inserted 1n a similarly-shaped socket of a,

with these and other objects in View the 1 motor (not shown) to cause rotation of the shaft.

4,5 The cam-member 2b ts Within a transverse slot 45 ventlon comprises the combination of members 3, in

, an oblong reciprocating element 3 mounted and arrangement of parts so combined as to co- Within a depressed lon .t

g1 udmal groove 4 1n the act and co-operate with each other 1n the pertop Surface of the blade supporting member forman 0f the fmctwn and the accomphsh' the connection being such that the element 3I ment of the results hereln contemplated, and will be reciprocated longitudinally in said groove 60 comprises in one of its adaptations the species or preferred form illustrated in the accompanying drawing, in which:- Y

Fig. 1 is a view in side elevation of a shaving machine embodying my invention;

by a revolving movement of the cam 2b when the shaft 2 is rotated. The reciprocating member 3 is provided with blocks 3a or the like for connection with and reciprocation of a cutting blade 5 on the uppery ilat blade-mounting surface I".

All the parts are locked to the comb member I by a clamp-member 6 which is provided at its opposite ends with depending flanges 6. 6 having locking grooves 6*, 6 adapted to cooperate with a spring plate 1 mounted to swing about the stem-member Ib into and out of locking engagement with the clamp plate 6 and, as shown, mounted by a fast connection on a hub member 8 swinging on saidstem-member Ih and by which the user may swing the hub member 8 and plate 'I into and out of locking engagement with the clamp plate. Said spring plate 1 is provided at the ends thereof with rounded groove-engaging edges 'l' and also has projecting stop lugs l* extending from corners of such ends to prevent excessive turning of. said spring lock-plate.

It will be seen from the above that I have provided an extremely simple holder mechanism for mounting a reciprocable blade and one that is capable of permitting a ready and quick fastening and release of the blade by an unskilled user, and it will be obvious that in a device of the character above specified the cutting or shaving will be accomplished alongor at an outside guarded surface adjacent to the tapered edge of the comb portion and without dirt-accumulating cavities and the application of the razor to the face will be in a manner very similar to the application of the conventional safety razor; that my device will be free from dirt or hair-collecting cavities and that the parts may be readily dis-assembled for cleaning and sterilizing and also that such dis-assembly and remounting may be accomplished by simple movements which are similar to those now employed for mounting conventional non-reciprocating safety razors.

An important feature of my invention comprises the combination, in my aforesaid mechanism, of a blade-supporting member having a comb portion which in the embodiment shown has similar tapering double edges and a top surface l provided with a at blade-supporting portion I merging at each of its opposite sides with a pronged or toothed edge lc which is beveled in relation to said flat blade-supporting surface, with a cutting blade 5 which, in the embodiment shown, is a double-edged blade, and has a bottom at surface 5 abutting the ilat supporting surface of the comb l and is provided, at each edge, with an edge portion 5a having a single bevel complemental to the comb bevel and extending from the top surface of the blade to the bottom surface so that the two beveled surfaces are disposed in alignment or in a single plane. Said beveled edge of the blade is provided with cutting teeth lib each having indentations preferably arcuate in linear conformation and provided with similarly beveled edge portions extending from the top to the bottom fiat surfaces at a similar inclination. These cutting-teeth .ib overlie flat portions of guarding-prongs I on the comb member l' separated by inter-prong-spaces If and adapted, in the process of shaving, to receive and hold the hair to be cut between them but which are unsharpened and have no cutting function, such prongs being merely employed to retain, in upright position, the upper free portions of the hairs during the cutting operation by the cutter, the severing by the cutting edge taking place between the skin and such comb portions. It will be understood that the edges of the teeth of the cutting blade will be very sharp and that the reciprocating movement thereof will do the cutting so that the guard prongs need not be sharp and the function thereof is merely to support the outer portions of the hairs during the cutting of the same close to the face. I am thus enabled to produce a much closer shave than can possibly be obtained by the use of a mechanism which reciprocates above a comb member that engages the lowex portion of the hair instead of the outer free portion thereof. It will be seen also, that because of the aligned inclined edges of the comb and blade edge the teeth of the blade will, in the operation of shaving, be positioned closely against the face of the user but that the user will, because of the guarding function of the comb member, beunable to cut his face unless he presses the same into the face very hard in a manner that would cause the ordinary safety razor also to 'produce a cut or chang.

It will be understood that the fiat portion of the blade rests flatly against the flat bladesupporting portion of the comb and that the skin of the user cannot be forced between these surfaces and also that the thickness of the metal of the blade is above this fiat surface and said blade itself acts to slightly space the surface of the skin from the cutting edges which are reciprocated laterally against the spaces of the comb teeth.

The provision, on the clamp-member 6 of beveled edges 6* which are also in substantially thel same plane as the beveled edge surfaces of the blade and comb also cooperates with said comb and beveled edges of the blade to guard the face of the user against injury, while permitting close access of the blade to the face for the purpose of enabling a close shave to be obtained.

It will'be seen from the drawing and the above description, that applicants blade is adapted to cut upon a lateral relative movement of such blade and the comb teeth Ic. These comb teeth are not sharpened and do not cooperate in a cutting or shearing action with the blade teeth, but on the contrary, the comb teeth are utilized as guiding elements and also to hold or retain the skin firm and the hairs in position while the sharp edge of the blade cuts such hairs in a manner similar to the cutting by a knife or by the edge of a razor blade and without appreciable, if any, shearing action between the edges of the comb-teeth and edges of the teeth of the blade Having described Amy invention, I claim:

l. A shaving machine embodying, in combination, a stationary blade-supporting member having a body portion provided at its top with a flat blade-supporting surface and an outwardly-projecting comb portion provided along a side of the top surface with a beveled edge merging with said at surface, said comb portion being provided with a series of comb teeth and interdental spaces disposed at right angles to said edge and extending inwardly of said beveled edge portion and through a part of said dat blade-supporting portion, a blade having a at bottom surface abutting the said flat surface of said supporting member and having a beveled edge extending along a side of the top surface and provided with an acute angle coinciding with the bottom surface of the blade and with the said flat supporting surface, said outer beveled edge of the blade and the beveled edges of the comb teeth being disposed in the same inclined plane, said beveled edges of the comb and knife providing a beveled skin-contacting surface adapted in the shaving operation to be pressed against the face of the user, and said beveled edge of the blade being provided with a series of teeth having lateral edges similarly beveled and adapted to cut upon lateral movement of the blade in relation to said comb portion, means for clamping said members together, and power means for reciprocating said blade.

2. A shaving machine embodying, in combinai tion, a stationary blade-supporting member having a body portion provided at its top with a flat blade-supporting surface and an outwardly-projecting comb portion provided along a side of the top surface with a beveled edge merging with said flat surface, said comb portion being provided with a series of comb teeth and interdental spaces disposed at right angles to said edge and extending inwardly of said beveled edge portion and through a part of said flat blade-supporting portion, a blade having a flat bottom surface abutting the said flat surface of said supporting member and having a beveled edge provided with an acute "angle coinciding with the bottom -surface of the blade and with the said flat supporting surface, said outer beveled edge of the blade and the beveled edges of the comb teeth being disposed in the same inclined plane, and said beveled edge of the blade being provided with a series of teeth having lateral edges similarly beveled and adapted to cut upon lateral movement of the blade in relation to said comb portion, a clamping member having a clamping connection with said blade supporting member at opposite ends and having a beveled edge inclined in substantially the same plane as the beveled edges of the comb and blade, said beveled edges of the comb, blade and clamping member providing an aligned skin-contacting beveled surface adapted to contact, in the shaving operation, with the skin of the user, and

power means for reciprocating said blade between` said clamping member and comb.

3. A shaving machine embodying, in combination, a stationary blade-supporting member having a body portion provided with a at bladesupporting surface and an outwardly-projecting comb portion provided with a beveled edge merging with said flat surface, said comb portion being provided with a series of comb teeth and interdental spaces disposed at right angles t said edge and extending inwardly of said beveled edge portion and through a part of said flat blade-supporting portion, a blade having a at bottom surface abutting the said iiat surface of said supporting member and having a beveled edge provided with an acute angle coinciding with the bottom surface of the blade and with the said flat supporting surface, said outer beveled edge of the blade and the beveled edges of the comb teeth being disposed in the same inclined plane, and said beveled edge of the blade being provided with a series of teeth having lateral edges similarly beveled and adapted to cut upon lateral movement of the blade in relation to said comb portion, a clamping member having a clamping connection with said blade supporting member at opposite ends and having a beveled edge inclined in substantially the same plane as the beveled edges of the comb and blade, a spring locking member rotatably mounted at the side of said supporting member opposite to said clamping member and adapted to cooperate with the ends of. said clamping member to resiliently lock the blade and comb members together, and means for reciprocating said blade.

4. A shaving machine embodying, in combination, a stationary blade-supporting member having a body portion provided with a flat bladesupportingsurface and an outwardly-projecting comb portion provided with a beveled edge merging with said Vflat surface, said comb portion being provided with a series of comb teeth and interdental spaces disposed' at right angles to said edge and extending inwardly of said beveled edge portion and through a part of said iiat blade-supporting portion, a blade having a at bottom surface abutting the said iiat surface of said supporting member and having a beveled edge provided with an acute angle coinciding with the bottom surface of the blade and with the said at supporting surface, said outer beveled edge of the blade and the beveled edges of the comb teeth being disposed in the same inclined plane, and said beveled edge of the blade being provided with a series of teeth having lateral edges similarly beveled and adapted to cut upon lateral movement of the blade in relation to said comb portion, the bottom side of said supporting member at the edge thereof being undercut to provide elongated and pointed comb teeth, a spring locking member rotatably mounted at the side of. said supporting member opposite to said clamping member and adapted to cooperate with the ends of said clamping member to resiliently lock the blade and comb members together, and means for reciprocating said blade.

5. A shaving machine embodying, in combination, a blade-supporting member having a relative thick middle portion with an upper iiat blade-supporting surface and an edge portion pointed and provided with teeth to form a comb portion having a top surface partly flat and partly beveled, a cylindrical stem member attached to and projecting from the bottom surface of said middle portion to produce a T-shaped structure and having an axial bore, a shaft disposed within said axial bore and passing through said supporting member, said shaft being provided at its lower end with means for engagement with a motor and having at its upper end a blade-reciprocating cam, said supporting member being provided with a fiat blade-contacting surface, a cutting blade provided with a fiat surface abutting the fiat surface of said supporting member and comb portion and having an operative connection with said cam, said comb portion and blade having beveled edge portions disposed in a similar inclined plane, a clamp-plate embracing said blade and comb, and a spring `plate' swiveled on said cylindrical base member for engaging parts of said clamp to resiliently connect the blade and comb together.

6. A shaving machine embodying, in combination, a blade-supporting member having a relative thick middle portion with an upper flat blade-supporting surface and an edge portion pointed and provided with teeth to form a comb portion having a top surface partly flat and partly beveled, a cylindrical stem member a1'.- tached to and projecting from the bottom surface of said middle portion to produce a T- shaped structure and having an axial bore, a shaft disposed within said axial bore and passing through said supporting member, said shaft being provided at its lower end with means for engagement with a motor and having at its upper end a blade-reciprocating cam, said supporting member being provided with a at blade-contacting surface and having a longitudinal depressed groove extending through said blade-contacting disposed in a similar inclined plane, a clampplate embracing said blade and comb, and a spring plate swiveled on said cylindrical base member for engaging parts of said clamp to resilientiy connect the blade and comb together. 5

THADDEUS s. CA'SNER. 

